View a selection of digital images in the Yale Center for British Art's online catalogue
https://collections.britishart.yale.edu/catalog/orbis:12964185
Classification:
Three-Dimensional Artifacts
Notes:
The pencils are advertised in The Athenaeum, no. 1586, Feb. 27, 1858, page 287: "Ever pointed tubular drawing pencils - Winsor and Newton's new patent, 1858. A new and perfect drawing pencil. Always and instantly ready for use. The point renewable any number of times without soiling the fingers. Manufactured without the aid of glue or any cement whatever. Perfectly firm when in use and free from the vibration of the ordinary ever pointed pencils. The point ever in one relative situation. Made of the purest Cumberland lead of every gradation and depth of colour of hardness and softness of texture and of thickness of substance. Alike fitted for the most delicate or the boldest hand. Costing after the first expense of holders but 3d each. Manufactured of the following letters embracing those required for sketching and general pencil drawing, vis. F, M, B, BB. Mounted in ebony handles with silvered points, 1s 6d each. Sets of four complete in morocco case 7s the set. Cases of six leads for replenishing the four holders 1s 6d ..."